Combined welt seam presser foot



Jan m, 1959 J. LANG I COMBINED WELT SEAM PRESSER FOOT Filed Sept. 19,1946 Fig, i.

G N A L N H O J [N VEN TOR.

ATTDRAEY August 13, 1940.

Patented Jan. 10, 1950 UNITED STATES Aren't orrlcs 2 Claims.

and articles of upholstery to provide welt seams therein.

This invention is an improvement on my welt seam presser foot, PatentNo. 2,211,333, dated An object of this invention 15 to provide a presserfoot having welt seam cord guiding means adapted for operating on weltseams having various sizes of circular cords therein.

Another object of this invention is to provide a supporting means for aCircular welt seam gauge whereby the gauge may be raised a considerabledistance for operating on welt seams having cords of large diameter. p

Another object of this invention is to provide a welt seam gauge whichis adjustable both vertically and sideways to engage cords of difierentdiameters.

With the above and other objects in view, the invention will behereinafter more particularly described, and the combination andarrangement of parts will be shown in the accompanying drawings andpointed out in the claims which form part of this specification.

Reference will now be had to the drawings, wherein like numerals ofreference designate corresponding parts throughout the several views, inwhich:

Figure 1 is a front elevation of the welt seam presser foot.

Figure 2 is a side elevation of the presser foot shown in Figure 1.

Figure 3 is a top plan view of the presser foot removed from the presserfoot bar.

Figure 4 is a top plan view of a modified welt seam presser foot.

Figure 5 is a front elevation of the modified presser foot shown inFigure 4.

Figure 6 is a bottom view of the presser foot shown in Figures 1, 2 and3.

In the illustrated embodiment of the invention, the numeral ll]indicates a combined welt seam presser foot having a shank l l which issuitably adapted at its upper end to fit the lower end of a presser footbar 12. The presser foot ll] may be secured to the bar I2 by a screw l3threaded into the bar.

The presser foot shank H has a rectangular through opening I4 positionedtransversely of the line of stitching. An arm I5 is slidably mounted inthe opening l4 and is secured to the shank I l by a screw it. The armhas a downward and forward extension H. The extension [1 has a threadedaperture i8 and a vertical guideway ill at its free end.

A gauge 29 having a centrally positioned aperture 2! is mounted on ascrew 22 threaded in the aperture 18. The aperture 2! in the gauge 20terminates in line with the needle aperture 25 in the presser foot It.

The gauge 29 comprises two fingers 2B which are positioned horizontallyand overlap the front portion of the presser foot as.

lhe gauge 26 may be adjusted vertically in the guideway l9. The gaugemay also be adjusted horizontally by moving the arm l5 in the open ing il. The lower portion of the gauge 20 in transverse contact with the workhas an arcuate contour 21. Y

These adjustments make it possible to move the arcuate surface 21 to andfrom the needle and thereby operate on welt seams having various sizesof cords therein with a single gauge and with precision.

In my prior patent, No. 2,211,333, I have disclosed a welt seam presserfoot wherein a roller gauge is rotatably mounted on an arm, and whichproduced point contact with the material worked upon. I have found thatit is necessary to have an elongated or linear contact of the gauge withthe work. Also to terminate the guide bars on the foot and on the gaugepast the needle to a small extent to facilitate operations when turningcorners on a cushion, etc., worked upon.

As shown in Figure 6, the presser-foot in has an elongated linear guidebar 30 which terminates past the needle aperture '25. The gauge 2% alsohas an elongated linear bar 3| which terminates slightly past the needleaperture 25. The presser foot has a feed-dog contact bar 32.

Figures 4 and 5 show a modified welt seam presser foot 35 similar to thepresser foot Hi. The presser foot 35 comprises a rectangular sidewaysmovable member 36 which fits into a rectangular cut-out 3'! at theright-hand side of the front end of the presser-foot.

The right hand member 36 is supported on the presser foot 35 by a leafsprin 38 and screws 39. A screw 4! passes freely through the member 36and is threaded into the foot portion of the presser foot 35. Byadjusting the screw 40, the member 36 may he moved to and from the footportion of the presser foot 35.

The lower portion of the member 35 in transverse contact with the workhas an arcuate contour 41 similar to the contour 21 on the gauge 20. Thecontour 21' on the gauge 20 on the presser foot 35 also has an arcuatecontour.

It is to be noted that the presser foot 35 may be used for making righthand or left hand welt seams and that the elements numbered 16', I1, and25' are duplicates of similarly numbered elements shown with the presserfoot H]. The member 36 has an elongated linear guide bar 4|.

It is also to be noted that the presser foot has a substantiallysemi-circular recess 42 which may be used when making right-hand weltseams having one particular size cord. The presser foot '35 provides anadjustable right-hand presser foot whereby welt seam having differentsize cords may be worked.

In accordance with the patent statutes I have described and illustratedthe preferred embodiments of my invention, but it will be understoodthat various changes and modifications can be made therein withoutdeparting from the spirit of the invention as defined by the appendedclaims.

I claim:

1. In a welt seam presser foot for sewing machines having a needle,comprising a shank having a downwardly and forwardly extending arm, saidarm being horizontally slidaoly mounted on said shank, a welt seam gaugehaving a vertical aperture formed therein, threaded means secured tosaid shank passing through said aperture and permitting verticaladjustment of said gauge, the lower portion of said gauge in transversecontact with the material 4 stitching of a finished welt seam inalignment with said needle, and said threaded means permittingadjustment of said gauge to permit said foot to operate on welt seamshaving various sized cords therein.

2. In a welt seam presser foot having an aperture for a sewing machineneedle, a shank having a rectangular through opening, an arm slidablymounted in said opening, said arm being positioned horizontally andcrosswise of the line of stitching, said arm having a, downward andforward extension, said extension having an upright guideway at the freeend thereof, a welt seam gauge having a vertical aperture formedtherein, threaded means secured to said shank passing through saidaperture and permitting vertical adjustment of said gauge, said gaugehaving a horizontally positioned slot in alinement with said needleaperture, the portion of said gauge in transverse contact with thematerial worked upon having an arcuate contour and being designed tohold the stitching of a finished welt seam in alinement with saidneedle, and said threaded means permitting adjustment of said gauge topermit said foot to operate on welt seams havin various sized cordstherein, said foot and said gauge having guide bars terminating slightlypast said needle to facilitate turning of corners of articles havingwelt seams.

JOHN LANG.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Name Date

